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Commit | Line | Data |
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3861aa5c WD |
1 | /* |
2 | * Based on LiMon - BOOTP. | |
3 | * | |
4 | * Copyright 1994, 1995, 2000 Neil Russell. | |
5 | * (See License) | |
6 | * Copyright 2000 Roland Borde | |
7 | * Copyright 2000 Paolo Scaffardi | |
232c150a | 8 | * Copyright 2000-2004 Wolfgang Denk, wd@denx.de |
3861aa5c WD |
9 | */ |
10 | ||
3861aa5c WD |
11 | #include <common.h> |
12 | #include <command.h> | |
13 | #include <net.h> | |
34696958 | 14 | #include <net/tftp.h> |
3861aa5c | 15 | #include "bootp.h" |
232c150a | 16 | #include "nfs.h" |
3861aa5c WD |
17 | #ifdef CONFIG_STATUS_LED |
18 | #include <status_led.h> | |
19 | #endif | |
db7720ba KP |
20 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
21 | #include "net_rand.h" | |
22 | #endif | |
3861aa5c | 23 | |
3090b7e3 | 24 | #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */ |
3861aa5c | 25 | |
f59be6e8 SW |
26 | /* |
27 | * The timeout for the initial BOOTP/DHCP request used to be described by a | |
28 | * counter of fixed-length timeout periods. TIMEOUT_COUNT represents | |
29 | * that counter | |
30 | * | |
31 | * Now that the timeout periods are variable (exponential backoff and retry) | |
32 | * we convert the timeout count to the absolute time it would have take to | |
33 | * execute that many retries, and keep sending retry packets until that time | |
34 | * is reached. | |
35 | */ | |
232c150a | 36 | #ifndef CONFIG_NET_RETRY_COUNT |
3090b7e3 | 37 | # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */ |
3861aa5c | 38 | #else |
232c150a | 39 | # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) |
3861aa5c | 40 | #endif |
f59be6e8 | 41 | #define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000) |
3861aa5c | 42 | |
3090b7e3 JH |
43 | #define PORT_BOOTPS 67 /* BOOTP server UDP port */ |
44 | #define PORT_BOOTPC 68 /* BOOTP client UDP port */ | |
3861aa5c | 45 | |
3090b7e3 | 46 | #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */ |
232c150a | 47 | #define CONFIG_DHCP_MIN_EXT_LEN 64 |
3861aa5c WD |
48 | #endif |
49 | ||
92ac8acc TR |
50 | #ifndef CONFIG_BOOTP_ID_CACHE_SIZE |
51 | #define CONFIG_BOOTP_ID_CACHE_SIZE 4 | |
52 | #endif | |
53 | ||
5917e7d1 | 54 | u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE]; |
92ac8acc | 55 | unsigned int bootp_num_ids; |
7044c6bb | 56 | int bootp_try; |
f59be6e8 SW |
57 | ulong bootp_start; |
58 | ulong bootp_timeout; | |
586cbe51 JH |
59 | char net_nis_domain[32] = {0,}; /* Our NIS domain */ |
60 | char net_hostname[32] = {0,}; /* Our hostname */ | |
61 | char net_root_path[64] = {0,}; /* Our bootpath */ | |
3861aa5c | 62 | |
50768f5b AM |
63 | static ulong time_taken_max; |
64 | ||
643d1ab2 | 65 | #if defined(CONFIG_CMD_DHCP) |
06370590 | 66 | static dhcp_state_t dhcp_state = INIT; |
5917e7d1 | 67 | static u32 dhcp_leasetime; |
049a95a7 | 68 | static struct in_addr dhcp_server_ip; |
ec87b1b3 SB |
69 | static u8 dhcp_option_overload; |
70 | #define OVERLOAD_FILE 1 | |
71 | #define OVERLOAD_SNAME 2 | |
049a95a7 JH |
72 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
73 | unsigned src, unsigned len); | |
3861aa5c WD |
74 | |
75 | /* For Debug */ | |
3e38691e WD |
76 | #if 0 |
77 | static char *dhcpmsg2str(int type) | |
3861aa5c WD |
78 | { |
79 | switch (type) { | |
232c150a WD |
80 | case 1: return "DHCPDISCOVER"; break; |
81 | case 2: return "DHCPOFFER"; break; | |
82 | case 3: return "DHCPREQUEST"; break; | |
83 | case 4: return "DHCPDECLINE"; break; | |
84 | case 5: return "DHCPACK"; break; | |
85 | case 6: return "DHCPNACK"; break; | |
86 | case 7: return "DHCPRELEASE"; break; | |
3861aa5c WD |
87 | default: return "UNKNOWN/INVALID MSG TYPE"; break; |
88 | } | |
89 | } | |
3e38691e | 90 | #endif |
610f2e9c | 91 | #endif |
3861aa5c | 92 | |
92ac8acc TR |
93 | static void bootp_add_id(ulong id) |
94 | { | |
95 | if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) { | |
96 | size_t size = sizeof(bootp_ids) - sizeof(id); | |
97 | ||
98 | memmove(bootp_ids, &bootp_ids[1], size); | |
99 | bootp_ids[bootp_num_ids - 1] = id; | |
100 | } else { | |
101 | bootp_ids[bootp_num_ids] = id; | |
102 | bootp_num_ids++; | |
103 | } | |
104 | } | |
105 | ||
106 | static bool bootp_match_id(ulong id) | |
107 | { | |
108 | unsigned int i; | |
109 | ||
110 | for (i = 0; i < bootp_num_ids; i++) | |
111 | if (bootp_ids[i] == id) | |
112 | return true; | |
113 | ||
114 | return false; | |
115 | } | |
116 | ||
867d6ae2 SB |
117 | static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src, |
118 | unsigned len) | |
3861aa5c | 119 | { |
7044c6bb | 120 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
121 | int retval = 0; |
122 | ||
123 | if (dest != PORT_BOOTPC || src != PORT_BOOTPS) | |
124 | retval = -1; | |
7044c6bb | 125 | else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE) |
3861aa5c | 126 | retval = -2; |
867d6ae2 | 127 | else if (bp->bp_op != OP_BOOTREPLY) |
3861aa5c | 128 | retval = -3; |
3861aa5c WD |
129 | else if (bp->bp_htype != HWT_ETHER) |
130 | retval = -4; | |
131 | else if (bp->bp_hlen != HWL_ETHER) | |
132 | retval = -5; | |
5917e7d1 | 133 | else if (!bootp_match_id(net_read_u32(&bp->bp_id))) |
3861aa5c | 134 | retval = -6; |
3861aa5c | 135 | |
0ebf04c6 | 136 | debug("Filtering pkt = %d\n", retval); |
3861aa5c WD |
137 | |
138 | return retval; | |
139 | } | |
140 | ||
141 | /* | |
142 | * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet | |
143 | */ | |
7044c6bb | 144 | static void store_net_params(struct bootp_hdr *bp) |
3861aa5c | 145 | { |
5d110f0a | 146 | #if !defined(CONFIG_BOOTP_SERVERIP) |
049a95a7 | 147 | struct in_addr tmp_ip; |
1752f0fd | 148 | |
049a95a7 JH |
149 | net_copy_ip(&tmp_ip, &bp->bp_siaddr); |
150 | if (tmp_ip.s_addr != 0) | |
151 | net_copy_ip(&net_server_ip, &bp->bp_siaddr); | |
1203fcce JH |
152 | memcpy(net_server_ethaddr, |
153 | ((struct ethernet_hdr *)net_rx_packet)->et_src, 6); | |
ec87b1b3 SB |
154 | if ( |
155 | #if defined(CONFIG_CMD_DHCP) | |
156 | !(dhcp_option_overload & OVERLOAD_FILE) && | |
157 | #endif | |
158 | (strlen(bp->bp_file) > 0)) { | |
1411157d JH |
159 | copy_filename(net_boot_file_name, bp->bp_file, |
160 | sizeof(net_boot_file_name)); | |
ec87b1b3 | 161 | } |
3861aa5c | 162 | |
1411157d | 163 | debug("net_boot_file_name: %s\n", net_boot_file_name); |
3861aa5c WD |
164 | |
165 | /* Propagate to environment: | |
8bde7f77 | 166 | * don't delete exising entry when BOOTP / DHCP reply does |
3861aa5c WD |
167 | * not contain a new value |
168 | */ | |
1411157d JH |
169 | if (*net_boot_file_name) |
170 | setenv("bootfile", net_boot_file_name); | |
ecec4e9c | 171 | #endif |
049a95a7 | 172 | net_copy_ip(&net_ip, &bp->bp_yiaddr); |
3861aa5c WD |
173 | } |
174 | ||
3090b7e3 | 175 | static int truncate_sz(const char *name, int maxlen, int curlen) |
3861aa5c WD |
176 | { |
177 | if (curlen >= maxlen) { | |
3090b7e3 JH |
178 | printf("*** WARNING: %s is too long (%d - max: %d)" |
179 | " - truncated\n", name, curlen, maxlen); | |
3861aa5c WD |
180 | curlen = maxlen - 1; |
181 | } | |
3090b7e3 | 182 | return curlen; |
3861aa5c WD |
183 | } |
184 | ||
643d1ab2 | 185 | #if !defined(CONFIG_CMD_DHCP) |
3861aa5c | 186 | |
7044c6bb | 187 | static void bootp_process_vendor_field(u8 *ext) |
3861aa5c | 188 | { |
232c150a | 189 | int size = *(ext + 1); |
3861aa5c | 190 | |
0ebf04c6 | 191 | debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, |
7044c6bb | 192 | *(ext + 1)); |
3861aa5c | 193 | |
1411157d | 194 | net_boot_file_expected_size_in_blocks = 0; |
3861aa5c | 195 | |
232c150a WD |
196 | switch (*ext) { |
197 | /* Fixed length fields */ | |
3090b7e3 | 198 | case 1: /* Subnet mask */ |
049a95a7 JH |
199 | if (net_netmask.s_addr == 0) |
200 | net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2)); | |
3861aa5c | 201 | break; |
3090b7e3 | 202 | case 2: /* Time offset - Not yet supported */ |
3861aa5c | 203 | break; |
232c150a | 204 | /* Variable length fields */ |
3090b7e3 | 205 | case 3: /* Gateways list */ |
049a95a7 JH |
206 | if (net_gateway.s_addr == 0) |
207 | net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2)); | |
3861aa5c | 208 | break; |
3090b7e3 | 209 | case 4: /* Time server - Not yet supported */ |
3861aa5c | 210 | break; |
3090b7e3 | 211 | case 5: /* IEN-116 name server - Not yet supported */ |
3861aa5c WD |
212 | break; |
213 | case 6: | |
049a95a7 JH |
214 | if (net_dns_server.s_addr == 0) |
215 | net_copy_ip(&net_dns_server, | |
216 | (struct in_addr *)(ext + 2)); | |
1fe80d79 | 217 | #if defined(CONFIG_BOOTP_DNS2) |
049a95a7 JH |
218 | if ((net_dns_server2.s_addr == 0) && (size > 4)) |
219 | net_copy_ip(&net_dns_server2, | |
220 | (struct in_addr *)(ext + 2 + 4)); | |
fe389a82 | 221 | #endif |
3861aa5c | 222 | break; |
3090b7e3 | 223 | case 7: /* Log server - Not yet supported */ |
3861aa5c | 224 | break; |
3090b7e3 | 225 | case 8: /* Cookie/Quote server - Not yet supported */ |
3861aa5c | 226 | break; |
3090b7e3 | 227 | case 9: /* LPR server - Not yet supported */ |
3861aa5c | 228 | break; |
3090b7e3 | 229 | case 10: /* Impress server - Not yet supported */ |
3861aa5c | 230 | break; |
3090b7e3 | 231 | case 11: /* RPL server - Not yet supported */ |
3861aa5c | 232 | break; |
3090b7e3 | 233 | case 12: /* Host name */ |
586cbe51 | 234 | if (net_hostname[0] == 0) { |
3090b7e3 | 235 | size = truncate_sz("Host Name", |
586cbe51 JH |
236 | sizeof(net_hostname), size); |
237 | memcpy(&net_hostname, ext + 2, size); | |
238 | net_hostname[size] = 0; | |
3861aa5c WD |
239 | } |
240 | break; | |
3090b7e3 | 241 | case 13: /* Boot file size */ |
3861aa5c | 242 | if (size == 2) |
1411157d JH |
243 | net_boot_file_expected_size_in_blocks = |
244 | ntohs(*(ushort *)(ext + 2)); | |
3861aa5c | 245 | else if (size == 4) |
1411157d JH |
246 | net_boot_file_expected_size_in_blocks = |
247 | ntohl(*(ulong *)(ext + 2)); | |
3861aa5c | 248 | break; |
3090b7e3 | 249 | case 14: /* Merit dump file - Not yet supported */ |
3861aa5c | 250 | break; |
3090b7e3 | 251 | case 15: /* Domain name - Not yet supported */ |
3861aa5c | 252 | break; |
3090b7e3 | 253 | case 16: /* Swap server - Not yet supported */ |
3861aa5c | 254 | break; |
3090b7e3 | 255 | case 17: /* Root path */ |
586cbe51 | 256 | if (net_root_path[0] == 0) { |
3090b7e3 | 257 | size = truncate_sz("Root Path", |
586cbe51 JH |
258 | sizeof(net_root_path), size); |
259 | memcpy(&net_root_path, ext + 2, size); | |
260 | net_root_path[size] = 0; | |
3861aa5c WD |
261 | } |
262 | break; | |
3090b7e3 | 263 | case 18: /* Extension path - Not yet supported */ |
3861aa5c | 264 | /* |
8bde7f77 WD |
265 | * This can be used to send the information of the |
266 | * vendor area in another file that the client can | |
267 | * access via TFTP. | |
3861aa5c WD |
268 | */ |
269 | break; | |
232c150a | 270 | /* IP host layer fields */ |
3090b7e3 | 271 | case 40: /* NIS Domain name */ |
586cbe51 | 272 | if (net_nis_domain[0] == 0) { |
3090b7e3 | 273 | size = truncate_sz("NIS Domain Name", |
586cbe51 JH |
274 | sizeof(net_nis_domain), size); |
275 | memcpy(&net_nis_domain, ext + 2, size); | |
276 | net_nis_domain[size] = 0; | |
3861aa5c WD |
277 | } |
278 | break; | |
09e3a67d LP |
279 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
280 | case 42: /* NTP server IP */ | |
049a95a7 | 281 | net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2)); |
09e3a67d LP |
282 | break; |
283 | #endif | |
232c150a | 284 | /* Application layer fields */ |
3090b7e3 | 285 | case 43: /* Vendor specific info - Not yet supported */ |
3861aa5c | 286 | /* |
8bde7f77 WD |
287 | * Binary information to exchange specific |
288 | * product information. | |
3861aa5c WD |
289 | */ |
290 | break; | |
232c150a WD |
291 | /* Reserved (custom) fields (128..254) */ |
292 | } | |
3861aa5c WD |
293 | } |
294 | ||
7044c6bb | 295 | static void bootp_process_vendor(u8 *ext, int size) |
3861aa5c | 296 | { |
232c150a | 297 | u8 *end = ext + size; |
3861aa5c | 298 | |
0ebf04c6 | 299 | debug("[BOOTP] Checking extension (%d bytes)...\n", size); |
3861aa5c | 300 | |
232c150a WD |
301 | while ((ext < end) && (*ext != 0xff)) { |
302 | if (*ext == 0) { | |
303 | ext++; | |
304 | } else { | |
305 | u8 *opt = ext; | |
306 | ||
307 | ext += ext[1] + 2; | |
308 | if (ext <= end) | |
7044c6bb | 309 | bootp_process_vendor_field(opt); |
232c150a | 310 | } |
3861aa5c | 311 | } |
3861aa5c | 312 | |
3090b7e3 | 313 | debug("[BOOTP] Received fields:\n"); |
049a95a7 JH |
314 | if (net_netmask.s_addr) |
315 | debug("net_netmask : %pI4\n", &net_netmask); | |
232c150a | 316 | |
049a95a7 JH |
317 | if (net_gateway.s_addr) |
318 | debug("net_gateway : %pI4", &net_gateway); | |
232c150a | 319 | |
1411157d JH |
320 | if (net_boot_file_expected_size_in_blocks) |
321 | debug("net_boot_file_expected_size_in_blocks : %d\n", | |
322 | net_boot_file_expected_size_in_blocks); | |
3861aa5c | 323 | |
586cbe51 JH |
324 | if (net_hostname[0]) |
325 | debug("net_hostname : %s\n", net_hostname); | |
232c150a | 326 | |
586cbe51 JH |
327 | if (net_root_path[0]) |
328 | debug("net_root_path : %s\n", net_root_path); | |
232c150a | 329 | |
586cbe51 JH |
330 | if (net_nis_domain[0]) |
331 | debug("net_nis_domain : %s\n", net_nis_domain); | |
232c150a | 332 | |
09e3a67d | 333 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
049a95a7 JH |
334 | if (net_ntp_server) |
335 | debug("net_ntp_server : %pI4\n", &net_ntp_server); | |
09e3a67d | 336 | #endif |
232c150a | 337 | } |
09349866 | 338 | |
3861aa5c WD |
339 | /* |
340 | * Handle a BOOTP received packet. | |
341 | */ | |
049a95a7 JH |
342 | static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
343 | unsigned src, unsigned len) | |
3861aa5c | 344 | { |
7044c6bb | 345 | struct bootp_hdr *bp; |
3861aa5c | 346 | |
0ebf04c6 | 347 | debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n", |
7044c6bb | 348 | src, dest, len, sizeof(struct bootp_hdr)); |
3861aa5c | 349 | |
7044c6bb | 350 | bp = (struct bootp_hdr *)pkt; |
3861aa5c | 351 | |
3090b7e3 | 352 | /* Filter out pkts we don't want */ |
867d6ae2 | 353 | if (check_reply_packet(pkt, dest, src, len)) |
3861aa5c WD |
354 | return; |
355 | ||
356 | /* | |
232c150a | 357 | * Got a good BOOTP reply. Copy the data into our variables. |
3861aa5c | 358 | */ |
82953328 | 359 | #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) |
3090b7e3 | 360 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); |
3861aa5c WD |
361 | #endif |
362 | ||
7044c6bb | 363 | store_net_params(bp); /* Store net parameters from reply */ |
3861aa5c WD |
364 | |
365 | /* Retrieve extended information (we must parse the vendor area) */ | |
5917e7d1 | 366 | if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) |
7044c6bb | 367 | bootp_process_vendor((uchar *)&bp->bp_vend[4], len); |
3861aa5c | 368 | |
bc0571fc | 369 | net_set_timeout_handler(0, (thand_f *)0); |
573f14fe | 370 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop"); |
3861aa5c | 371 | |
0ebf04c6 | 372 | debug("Got good BOOTP\n"); |
3861aa5c | 373 | |
e4a3d57d | 374 | net_auto_load(); |
3861aa5c | 375 | } |
610f2e9c | 376 | #endif |
3861aa5c WD |
377 | |
378 | /* | |
379 | * Timeout on BOOTP/DHCP request. | |
380 | */ | |
7044c6bb | 381 | static void bootp_timeout_handler(void) |
3861aa5c | 382 | { |
f59be6e8 SW |
383 | ulong time_taken = get_timer(bootp_start); |
384 | ||
50768f5b | 385 | if (time_taken >= time_taken_max) { |
2c00e099 | 386 | #ifdef CONFIG_BOOTP_MAY_FAIL |
f59be6e8 | 387 | puts("\nRetry time exceeded\n"); |
b977aa80 | 388 | net_set_state(NETLOOP_FAIL); |
2c00e099 | 389 | #else |
f59be6e8 | 390 | puts("\nRetry time exceeded; starting again\n"); |
bc0571fc | 391 | net_start_again(); |
2c00e099 | 392 | #endif |
3861aa5c | 393 | } else { |
f59be6e8 | 394 | bootp_timeout *= 2; |
92ac8acc TR |
395 | if (bootp_timeout > 2000) |
396 | bootp_timeout = 2000; | |
bc0571fc | 397 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
7044c6bb | 398 | bootp_request(); |
3861aa5c WD |
399 | } |
400 | } | |
401 | ||
9ace17c8 IY |
402 | #define put_vci(e, str) \ |
403 | do { \ | |
404 | size_t vci_strlen = strlen(str); \ | |
405 | *e++ = 60; /* Vendor Class Identifier */ \ | |
406 | *e++ = vci_strlen; \ | |
407 | memcpy(e, str, vci_strlen); \ | |
408 | e += vci_strlen; \ | |
409 | } while (0) | |
410 | ||
3861aa5c WD |
411 | /* |
412 | * Initialize BOOTP extension fields in the request. | |
413 | */ | |
643d1ab2 | 414 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
415 | static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip, |
416 | struct in_addr requested_ip) | |
3861aa5c | 417 | { |
232c150a WD |
418 | u8 *start = e; |
419 | u8 *cnt; | |
d2b5d5c4 JH |
420 | #if defined(CONFIG_BOOTP_PXE) |
421 | char *uuid; | |
d2b5d5c4 JH |
422 | u16 clientarch; |
423 | #endif | |
232c150a | 424 | |
1fe80d79 | 425 | #if defined(CONFIG_BOOTP_VENDOREX) |
232c150a | 426 | u8 *x; |
3861aa5c | 427 | #endif |
1fe80d79 | 428 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
77ddac94 | 429 | char *hostname; |
fe389a82 | 430 | #endif |
3861aa5c | 431 | |
232c150a WD |
432 | *e++ = 99; /* RFC1048 Magic Cookie */ |
433 | *e++ = 130; | |
434 | *e++ = 83; | |
435 | *e++ = 99; | |
3861aa5c | 436 | |
232c150a WD |
437 | *e++ = 53; /* DHCP Message Type */ |
438 | *e++ = 1; | |
439 | *e++ = message_type; | |
3861aa5c | 440 | |
232c150a WD |
441 | *e++ = 57; /* Maximum DHCP Message Size */ |
442 | *e++ = 2; | |
f8315731 JH |
443 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8; |
444 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
3861aa5c | 445 | |
049a95a7 JH |
446 | if (server_ip.s_addr) { |
447 | int tmp = ntohl(server_ip.s_addr); | |
3861aa5c | 448 | |
232c150a WD |
449 | *e++ = 54; /* ServerID */ |
450 | *e++ = 4; | |
451 | *e++ = tmp >> 24; | |
452 | *e++ = tmp >> 16; | |
453 | *e++ = tmp >> 8; | |
454 | *e++ = tmp & 0xff; | |
455 | } | |
3861aa5c | 456 | |
049a95a7 JH |
457 | if (requested_ip.s_addr) { |
458 | int tmp = ntohl(requested_ip.s_addr); | |
3861aa5c | 459 | |
232c150a WD |
460 | *e++ = 50; /* Requested IP */ |
461 | *e++ = 4; | |
462 | *e++ = tmp >> 24; | |
463 | *e++ = tmp >> 16; | |
464 | *e++ = tmp >> 8; | |
465 | *e++ = tmp & 0xff; | |
466 | } | |
1fe80d79 | 467 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
3090b7e3 JH |
468 | hostname = getenv("hostname"); |
469 | if (hostname) { | |
470 | int hostnamelen = strlen(hostname); | |
232c150a WD |
471 | |
472 | *e++ = 12; /* Hostname */ | |
473 | *e++ = hostnamelen; | |
3090b7e3 | 474 | memcpy(e, hostname, hostnamelen); |
232c150a WD |
475 | e += hostnamelen; |
476 | } | |
fe389a82 SR |
477 | #endif |
478 | ||
d2b5d5c4 JH |
479 | #if defined(CONFIG_BOOTP_PXE) |
480 | clientarch = CONFIG_BOOTP_PXE_CLIENTARCH; | |
481 | *e++ = 93; /* Client System Architecture */ | |
482 | *e++ = 2; | |
483 | *e++ = (clientarch >> 8) & 0xff; | |
484 | *e++ = clientarch & 0xff; | |
485 | ||
486 | *e++ = 94; /* Client Network Interface Identifier */ | |
487 | *e++ = 3; | |
488 | *e++ = 1; /* type field for UNDI */ | |
489 | *e++ = 0; /* major revision */ | |
490 | *e++ = 0; /* minor revision */ | |
491 | ||
492 | uuid = getenv("pxeuuid"); | |
493 | ||
494 | if (uuid) { | |
495 | if (uuid_str_valid(uuid)) { | |
496 | *e++ = 97; /* Client Machine Identifier */ | |
497 | *e++ = 17; | |
498 | *e++ = 0; /* type 0 - UUID */ | |
499 | ||
d718ded0 | 500 | uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD); |
d2b5d5c4 JH |
501 | e += 16; |
502 | } else { | |
503 | printf("Invalid pxeuuid: %s\n", uuid); | |
504 | } | |
505 | } | |
9ace17c8 | 506 | #endif |
d2b5d5c4 | 507 | |
214dc1da HP |
508 | #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING) |
509 | put_vci(e, CONFIG_SPL_NET_VCI_STRING); | |
510 | #elif defined(CONFIG_BOOTP_VCI_STRING) | |
9ace17c8 | 511 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
d2b5d5c4 JH |
512 | #endif |
513 | ||
1fe80d79 | 514 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 JH |
515 | x = dhcp_vendorex_prep(e); |
516 | if (x) | |
232c150a | 517 | return x - start; |
3861aa5c WD |
518 | #endif |
519 | ||
232c150a WD |
520 | *e++ = 55; /* Parameter Request List */ |
521 | cnt = e++; /* Pointer to count of requested items */ | |
522 | *cnt = 0; | |
1fe80d79 | 523 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
524 | *e++ = 1; /* Subnet Mask */ |
525 | *cnt += 1; | |
3861aa5c | 526 | #endif |
1fe80d79 | 527 | #if defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb WD |
528 | *e++ = 2; |
529 | *cnt += 1; | |
530 | #endif | |
1fe80d79 | 531 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
532 | *e++ = 3; /* Router Option */ |
533 | *cnt += 1; | |
3861aa5c | 534 | #endif |
1fe80d79 | 535 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
536 | *e++ = 6; /* DNS Server(s) */ |
537 | *cnt += 1; | |
3861aa5c | 538 | #endif |
1fe80d79 | 539 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
540 | *e++ = 12; /* Hostname */ |
541 | *cnt += 1; | |
3861aa5c | 542 | #endif |
1fe80d79 | 543 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
544 | *e++ = 13; /* Boot File Size */ |
545 | *cnt += 1; | |
3861aa5c | 546 | #endif |
1fe80d79 | 547 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
548 | *e++ = 17; /* Boot path */ |
549 | *cnt += 1; | |
3861aa5c | 550 | #endif |
1fe80d79 | 551 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
552 | *e++ = 40; /* NIS Domain name request */ |
553 | *cnt += 1; | |
ea287deb | 554 | #endif |
1fe80d79 | 555 | #if defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb WD |
556 | *e++ = 42; |
557 | *cnt += 1; | |
3861aa5c | 558 | #endif |
258ccd68 JL |
559 | /* no options, so back up to avoid sending an empty request list */ |
560 | if (*cnt == 0) | |
561 | e -= 2; | |
562 | ||
232c150a | 563 | *e++ = 255; /* End of the list */ |
3861aa5c | 564 | |
232c150a | 565 | /* Pad to minimal length */ |
3861aa5c | 566 | #ifdef CONFIG_DHCP_MIN_EXT_LEN |
21076f61 | 567 | while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN) |
232c150a | 568 | *e++ = 0; |
3861aa5c WD |
569 | #endif |
570 | ||
232c150a | 571 | return e - start; |
3861aa5c WD |
572 | } |
573 | ||
610f2e9c | 574 | #else |
3861aa5c | 575 | /* |
3090b7e3 | 576 | * Warning: no field size check - change CONFIG_BOOTP_* at your own risk! |
3861aa5c | 577 | */ |
049a95a7 | 578 | static int bootp_extended(u8 *e) |
3861aa5c | 579 | { |
232c150a | 580 | u8 *start = e; |
3861aa5c | 581 | |
232c150a WD |
582 | *e++ = 99; /* RFC1048 Magic Cookie */ |
583 | *e++ = 130; | |
584 | *e++ = 83; | |
585 | *e++ = 99; | |
3861aa5c | 586 | |
643d1ab2 | 587 | #if defined(CONFIG_CMD_DHCP) |
232c150a WD |
588 | *e++ = 53; /* DHCP Message Type */ |
589 | *e++ = 1; | |
590 | *e++ = DHCP_DISCOVER; | |
591 | ||
592 | *e++ = 57; /* Maximum DHCP Message Size */ | |
593 | *e++ = 2; | |
f8315731 JH |
594 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16; |
595 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
610f2e9c | 596 | #endif |
3861aa5c | 597 | |
7ac2fe2d IY |
598 | #if defined(CONFIG_BOOTP_VCI_STRING) || \ |
599 | (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)) | |
600 | #ifdef CONFIG_SPL_BUILD | |
601 | put_vci(e, CONFIG_SPL_NET_VCI_STRING); | |
602 | #else | |
9ace17c8 IY |
603 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
604 | #endif | |
7ac2fe2d | 605 | #endif |
9ace17c8 | 606 | |
1fe80d79 | 607 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
608 | *e++ = 1; /* Subnet mask request */ |
609 | *e++ = 4; | |
610 | e += 4; | |
3861aa5c WD |
611 | #endif |
612 | ||
1fe80d79 | 613 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
614 | *e++ = 3; /* Default gateway request */ |
615 | *e++ = 4; | |
616 | e += 4; | |
3861aa5c WD |
617 | #endif |
618 | ||
1fe80d79 | 619 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
620 | *e++ = 6; /* Domain Name Server */ |
621 | *e++ = 4; | |
622 | e += 4; | |
3861aa5c WD |
623 | #endif |
624 | ||
1fe80d79 | 625 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
626 | *e++ = 12; /* Host name request */ |
627 | *e++ = 32; | |
628 | e += 32; | |
3861aa5c WD |
629 | #endif |
630 | ||
1fe80d79 | 631 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
632 | *e++ = 13; /* Boot file size */ |
633 | *e++ = 2; | |
634 | e += 2; | |
3861aa5c WD |
635 | #endif |
636 | ||
1fe80d79 | 637 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
638 | *e++ = 17; /* Boot path */ |
639 | *e++ = 32; | |
640 | e += 32; | |
3861aa5c WD |
641 | #endif |
642 | ||
1fe80d79 | 643 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
644 | *e++ = 40; /* NIS Domain name request */ |
645 | *e++ = 32; | |
646 | e += 32; | |
3861aa5c | 647 | #endif |
09e3a67d LP |
648 | #if defined(CONFIG_BOOTP_NTPSERVER) |
649 | *e++ = 42; | |
650 | *e++ = 4; | |
651 | e += 4; | |
652 | #endif | |
3861aa5c | 653 | |
232c150a | 654 | *e++ = 255; /* End of the list */ |
3861aa5c | 655 | |
232c150a | 656 | return e - start; |
3861aa5c | 657 | } |
610f2e9c | 658 | #endif |
3861aa5c | 659 | |
7044c6bb | 660 | void bootp_reset(void) |
f59be6e8 | 661 | { |
92ac8acc | 662 | bootp_num_ids = 0; |
7044c6bb | 663 | bootp_try = 0; |
f59be6e8 | 664 | bootp_start = get_timer(0); |
92ac8acc | 665 | bootp_timeout = 250; |
f59be6e8 SW |
666 | } |
667 | ||
7044c6bb | 668 | void bootp_request(void) |
3861aa5c | 669 | { |
db288a96 | 670 | uchar *pkt, *iphdr; |
7044c6bb | 671 | struct bootp_hdr *bp; |
ae446f56 JH |
672 | int extlen, pktlen, iplen; |
673 | int eth_hdr_size; | |
eafc8db0 | 674 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
8e8d73b4 | 675 | ulong rand_ms; |
eafc8db0 | 676 | #endif |
5917e7d1 | 677 | u32 bootp_id; |
049a95a7 JH |
678 | struct in_addr zero_ip; |
679 | struct in_addr bcast_ip; | |
50768f5b | 680 | char *ep; /* Environment pointer */ |
3861aa5c | 681 | |
573f14fe | 682 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start"); |
643d1ab2 | 683 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c WD |
684 | dhcp_state = INIT; |
685 | #endif | |
686 | ||
50768f5b AM |
687 | ep = getenv("bootpretryperiod"); |
688 | if (ep != NULL) | |
689 | time_taken_max = simple_strtoul(ep, NULL, 10); | |
690 | else | |
691 | time_taken_max = TIMEOUT_MS; | |
692 | ||
3861aa5c | 693 | #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ |
7044c6bb | 694 | if (bootp_try == 0) |
eafc8db0 | 695 | srand_mac(); |
3861aa5c | 696 | |
7044c6bb JH |
697 | if (bootp_try <= 2) /* Start with max 1024 * 1ms */ |
698 | rand_ms = rand() >> (22 - bootp_try); | |
eafc8db0 JH |
699 | else /* After 3rd BOOTP request max 8192 * 1ms */ |
700 | rand_ms = rand() >> 19; | |
3861aa5c | 701 | |
eafc8db0 | 702 | printf("Random delay: %ld ms...\n", rand_ms); |
8e8d73b4 | 703 | mdelay(rand_ms); |
3090b7e3 | 704 | |
3861aa5c WD |
705 | #endif /* CONFIG_BOOTP_RANDOM_DELAY */ |
706 | ||
7044c6bb | 707 | printf("BOOTP broadcast %d\n", ++bootp_try); |
1203fcce | 708 | pkt = net_tx_packet; |
3090b7e3 | 709 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 710 | |
1203fcce | 711 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
ae446f56 | 712 | pkt += eth_hdr_size; |
3861aa5c WD |
713 | |
714 | /* | |
3090b7e3 JH |
715 | * Next line results in incorrect packet size being transmitted, |
716 | * resulting in errors in some DHCP servers, reporting missing bytes. | |
717 | * Size must be set in packet header after extension length has been | |
718 | * determined. | |
3861aa5c WD |
719 | * C. Hallinan, DS4.COM, Inc. |
720 | */ | |
4b11c916 | 721 | /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, |
7044c6bb | 722 | sizeof (struct bootp_hdr)); */ |
4b11c916 | 723 | iphdr = pkt; /* We need this later for net_set_udp_header() */ |
594c26f8 | 724 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 725 | |
7044c6bb | 726 | bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
727 | bp->bp_op = OP_BOOTREQUEST; |
728 | bp->bp_htype = HWT_ETHER; | |
729 | bp->bp_hlen = HWL_ETHER; | |
730 | bp->bp_hops = 0; | |
454d9d3e SB |
731 | /* |
732 | * according to RFC1542, should be 0 on first request, secs since | |
733 | * first request otherwise | |
734 | */ | |
735 | bp->bp_secs = htons(get_timer(bootp_start) / 1000); | |
049a95a7 JH |
736 | zero_ip.s_addr = 0; |
737 | net_write_ip(&bp->bp_ciaddr, zero_ip); | |
738 | net_write_ip(&bp->bp_yiaddr, zero_ip); | |
739 | net_write_ip(&bp->bp_siaddr, zero_ip); | |
740 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
0adb5b76 | 741 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
1411157d | 742 | copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); |
3861aa5c WD |
743 | |
744 | /* Request additional information from the BOOTP/DHCP server */ | |
643d1ab2 | 745 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
746 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip, |
747 | zero_ip); | |
3861aa5c | 748 | #else |
049a95a7 | 749 | extlen = bootp_extended((u8 *)bp->bp_vend); |
610f2e9c | 750 | #endif |
3861aa5c WD |
751 | |
752 | /* | |
753 | * Bootp ID is the lower 4 bytes of our ethernet address | |
49f3bdbb | 754 | * plus the current time in ms. |
3861aa5c | 755 | */ |
5917e7d1 ST |
756 | bootp_id = ((u32)net_ethaddr[2] << 24) |
757 | | ((u32)net_ethaddr[3] << 16) | |
758 | | ((u32)net_ethaddr[4] << 8) | |
759 | | (u32)net_ethaddr[5]; | |
7044c6bb JH |
760 | bootp_id += get_timer(0); |
761 | bootp_id = htonl(bootp_id); | |
762 | bootp_add_id(bootp_id); | |
5917e7d1 | 763 | net_copy_u32(&bp->bp_id, &bootp_id); |
3861aa5c WD |
764 | |
765 | /* | |
766 | * Calculate proper packet lengths taking into account the | |
767 | * variable size of the options field | |
768 | */ | |
ae446f56 JH |
769 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
770 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
771 | bcast_ip.s_addr = 0xFFFFFFFFL; |
772 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
bc0571fc | 773 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
3861aa5c | 774 | |
643d1ab2 | 775 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c | 776 | dhcp_state = SELECTING; |
049a95a7 | 777 | net_set_udp_handler(dhcp_handler); |
3861aa5c | 778 | #else |
049a95a7 | 779 | net_set_udp_handler(bootp_handler); |
610f2e9c | 780 | #endif |
1203fcce | 781 | net_send_packet(net_tx_packet, pktlen); |
3861aa5c WD |
782 | } |
783 | ||
643d1ab2 | 784 | #if defined(CONFIG_CMD_DHCP) |
774c3e05 | 785 | static void dhcp_process_options(uchar *popt, uchar *end) |
3861aa5c | 786 | { |
3861aa5c | 787 | int oplen, size; |
d8d8724b WD |
788 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
789 | int *to_ptr; | |
790 | #endif | |
3861aa5c | 791 | |
232c150a | 792 | while (popt < end && *popt != 0xff) { |
3861aa5c | 793 | oplen = *(popt + 1); |
232c150a | 794 | switch (*popt) { |
c56eb573 SB |
795 | case 0: |
796 | oplen = -1; /* Pad omits len byte */ | |
797 | break; | |
232c150a | 798 | case 1: |
049a95a7 | 799 | net_copy_ip(&net_netmask, (popt + 2)); |
232c150a | 800 | break; |
1fe80d79 | 801 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb | 802 | case 2: /* Time offset */ |
bc0571fc | 803 | to_ptr = &net_ntp_time_offset; |
5917e7d1 | 804 | net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2)); |
bc0571fc | 805 | net_ntp_time_offset = ntohl(net_ntp_time_offset); |
ea287deb WD |
806 | break; |
807 | #endif | |
232c150a | 808 | case 3: |
049a95a7 | 809 | net_copy_ip(&net_gateway, (popt + 2)); |
232c150a WD |
810 | break; |
811 | case 6: | |
049a95a7 | 812 | net_copy_ip(&net_dns_server, (popt + 2)); |
1fe80d79 | 813 | #if defined(CONFIG_BOOTP_DNS2) |
3090b7e3 | 814 | if (*(popt + 1) > 4) |
049a95a7 | 815 | net_copy_ip(&net_dns_server2, (popt + 2 + 4)); |
fe389a82 | 816 | #endif |
232c150a WD |
817 | break; |
818 | case 12: | |
3090b7e3 | 819 | size = truncate_sz("Host Name", |
586cbe51 JH |
820 | sizeof(net_hostname), oplen); |
821 | memcpy(&net_hostname, popt + 2, size); | |
822 | net_hostname[size] = 0; | |
232c150a WD |
823 | break; |
824 | case 15: /* Ignore Domain Name Option */ | |
825 | break; | |
826 | case 17: | |
3090b7e3 | 827 | size = truncate_sz("Root Path", |
586cbe51 JH |
828 | sizeof(net_root_path), oplen); |
829 | memcpy(&net_root_path, popt + 2, size); | |
830 | net_root_path[size] = 0; | |
232c150a | 831 | break; |
ee0f60df BR |
832 | case 28: /* Ignore Broadcast Address Option */ |
833 | break; | |
1fe80d79 | 834 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb | 835 | case 42: /* NTP server IP */ |
049a95a7 | 836 | net_copy_ip(&net_ntp_server, (popt + 2)); |
ea287deb WD |
837 | break; |
838 | #endif | |
232c150a | 839 | case 51: |
5917e7d1 | 840 | net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2)); |
232c150a | 841 | break; |
ec87b1b3 SB |
842 | case 52: |
843 | dhcp_option_overload = popt[2]; | |
844 | break; | |
232c150a WD |
845 | case 53: /* Ignore Message Type Option */ |
846 | break; | |
847 | case 54: | |
049a95a7 | 848 | net_copy_ip(&dhcp_server_ip, (popt + 2)); |
232c150a WD |
849 | break; |
850 | case 58: /* Ignore Renewal Time Option */ | |
851 | break; | |
852 | case 59: /* Ignore Rebinding Time Option */ | |
853 | break; | |
3b2e4fd9 WD |
854 | case 66: /* Ignore TFTP server name */ |
855 | break; | |
ec87b1b3 SB |
856 | case 67: /* Bootfile option */ |
857 | size = truncate_sz("Bootfile", | |
858 | sizeof(net_boot_file_name), oplen); | |
859 | memcpy(&net_boot_file_name, popt + 2, size); | |
860 | net_boot_file_name[size] = 0; | |
3b2e4fd9 | 861 | break; |
232c150a | 862 | default: |
1fe80d79 | 863 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 | 864 | if (dhcp_vendorex_proc(popt)) |
8bde7f77 | 865 | break; |
3861aa5c | 866 | #endif |
3090b7e3 | 867 | printf("*** Unhandled DHCP Option in OFFER/ACK:" |
7044c6bb | 868 | " %d\n", *popt); |
232c150a | 869 | break; |
3861aa5c WD |
870 | } |
871 | popt += oplen + 2; /* Process next option */ | |
872 | } | |
873 | } | |
874 | ||
774c3e05 SB |
875 | static void dhcp_packet_process_options(struct bootp_hdr *bp) |
876 | { | |
877 | uchar *popt = (uchar *)&bp->bp_vend[4]; | |
878 | uchar *end = popt + BOOTP_HDR_SIZE; | |
879 | ||
880 | if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC)) | |
881 | return; | |
882 | ||
883 | dhcp_option_overload = 0; | |
884 | ||
885 | /* | |
886 | * The 'options' field MUST be interpreted first, 'file' next, | |
887 | * 'sname' last. | |
888 | */ | |
889 | dhcp_process_options(popt, end); | |
890 | ||
891 | if (dhcp_option_overload & OVERLOAD_FILE) { | |
892 | popt = (uchar *)bp->bp_file; | |
893 | end = popt + sizeof(bp->bp_file); | |
894 | dhcp_process_options(popt, end); | |
895 | } | |
896 | ||
897 | if (dhcp_option_overload & OVERLOAD_SNAME) { | |
898 | popt = (uchar *)bp->bp_sname; | |
899 | end = popt + sizeof(bp->bp_sname); | |
900 | dhcp_process_options(popt, end); | |
901 | } | |
902 | } | |
903 | ||
7044c6bb | 904 | static int dhcp_message_type(unsigned char *popt) |
3861aa5c | 905 | { |
5917e7d1 | 906 | if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC)) |
3861aa5c WD |
907 | return -1; |
908 | ||
909 | popt += 4; | |
3090b7e3 JH |
910 | while (*popt != 0xff) { |
911 | if (*popt == 53) /* DHCP Message Type */ | |
3861aa5c | 912 | return *(popt + 2); |
c56eb573 SB |
913 | if (*popt == 0) { |
914 | /* Pad */ | |
915 | popt += 1; | |
916 | } else { | |
917 | /* Scan through all options */ | |
918 | popt += *(popt + 1) + 2; | |
919 | } | |
3861aa5c WD |
920 | } |
921 | return -1; | |
922 | } | |
923 | ||
7044c6bb | 924 | static void dhcp_send_request_packet(struct bootp_hdr *bp_offer) |
3861aa5c | 925 | { |
db288a96 | 926 | uchar *pkt, *iphdr; |
7044c6bb | 927 | struct bootp_hdr *bp; |
3861aa5c | 928 | int pktlen, iplen, extlen; |
ae446f56 | 929 | int eth_hdr_size; |
049a95a7 JH |
930 | struct in_addr offered_ip; |
931 | struct in_addr zero_ip; | |
932 | struct in_addr bcast_ip; | |
3861aa5c | 933 | |
7044c6bb | 934 | debug("dhcp_send_request_packet: Sending DHCPREQUEST\n"); |
1203fcce | 935 | pkt = net_tx_packet; |
3090b7e3 | 936 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 937 | |
1203fcce | 938 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
ae446f56 | 939 | pkt += eth_hdr_size; |
3861aa5c | 940 | |
3090b7e3 | 941 | iphdr = pkt; /* We'll need this later to set proper pkt size */ |
594c26f8 | 942 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 943 | |
7044c6bb | 944 | bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
945 | bp->bp_op = OP_BOOTREQUEST; |
946 | bp->bp_htype = HWT_ETHER; | |
947 | bp->bp_hlen = HWL_ETHER; | |
948 | bp->bp_hops = 0; | |
454d9d3e | 949 | bp->bp_secs = htons(get_timer(bootp_start) / 1000); |
3090b7e3 JH |
950 | /* Do not set the client IP, your IP, or server IP yet, since it |
951 | * hasn't been ACK'ed by the server yet */ | |
e5c794e4 | 952 | |
c6686703 | 953 | /* |
d82718fe WD |
954 | * RFC3046 requires Relay Agents to discard packets with |
955 | * nonzero and offered giaddr | |
956 | */ | |
049a95a7 JH |
957 | zero_ip.s_addr = 0; |
958 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
d82718fe | 959 | |
0adb5b76 | 960 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
b2b7fbc3 | 961 | copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); |
3861aa5c WD |
962 | |
963 | /* | |
964 | * ID is the id of the OFFER packet | |
965 | */ | |
966 | ||
5917e7d1 | 967 | net_copy_u32(&bp->bp_id, &bp_offer->bp_id); |
3861aa5c WD |
968 | |
969 | /* | |
970 | * Copy options from OFFER packet if present | |
971 | */ | |
e5c794e4 JF |
972 | |
973 | /* Copy offered IP into the parameters request list */ | |
049a95a7 JH |
974 | net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr); |
975 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST, | |
976 | dhcp_server_ip, offered_ip); | |
3861aa5c | 977 | |
ae446f56 JH |
978 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
979 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
980 | bcast_ip.s_addr = 0xFFFFFFFFL; |
981 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
3861aa5c | 982 | |
d9a2f416 AV |
983 | #ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY |
984 | udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY); | |
985 | #endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */ | |
f9623229 | 986 | debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); |
1203fcce | 987 | net_send_packet(net_tx_packet, pktlen); |
3861aa5c WD |
988 | } |
989 | ||
990 | /* | |
991 | * Handle DHCP received packets. | |
992 | */ | |
049a95a7 JH |
993 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
994 | unsigned src, unsigned len) | |
3861aa5c | 995 | { |
7044c6bb | 996 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
3861aa5c | 997 | |
0ebf04c6 | 998 | debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", |
7044c6bb | 999 | src, dest, len, dhcp_state); |
3861aa5c | 1000 | |
3090b7e3 | 1001 | /* Filter out pkts we don't want */ |
867d6ae2 | 1002 | if (check_reply_packet(pkt, dest, src, len)) |
3861aa5c WD |
1003 | return; |
1004 | ||
7044c6bb JH |
1005 | debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: " |
1006 | "%d\n", src, dest, len, dhcp_state); | |
3861aa5c | 1007 | |
44c42dd4 PF |
1008 | if (net_read_ip(&bp->bp_yiaddr).s_addr == 0) |
1009 | return; | |
1010 | ||
3861aa5c WD |
1011 | switch (dhcp_state) { |
1012 | case SELECTING: | |
1013 | /* | |
1014 | * Wait an appropriate time for any potential DHCPOFFER packets | |
3090b7e3 JH |
1015 | * to arrive. Then select one, and generate DHCPREQUEST |
1016 | * response. If filename is in format we recognize, assume it | |
1017 | * is a valid OFFER from a server we want. | |
3861aa5c | 1018 | */ |
0ebf04c6 | 1019 | debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file); |
6d0f6bcf | 1020 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 1021 | if (strncmp(bp->bp_file, |
6d0f6bcf | 1022 | CONFIG_SYS_BOOTFILE_PREFIX, |
3090b7e3 | 1023 | strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) { |
6d0f6bcf | 1024 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
774c3e05 | 1025 | dhcp_packet_process_options(bp); |
3861aa5c | 1026 | |
0ebf04c6 | 1027 | debug("TRANSITIONING TO REQUESTING STATE\n"); |
3861aa5c | 1028 | dhcp_state = REQUESTING; |
759a51b4 | 1029 | |
bc0571fc | 1030 | net_set_timeout_handler(5000, bootp_timeout_handler); |
7044c6bb | 1031 | dhcp_send_request_packet(bp); |
6d0f6bcf | 1032 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 1033 | } |
6d0f6bcf | 1034 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
3861aa5c WD |
1035 | |
1036 | return; | |
1037 | break; | |
1038 | case REQUESTING: | |
0ebf04c6 | 1039 | debug("DHCP State: REQUESTING\n"); |
3861aa5c | 1040 | |
7044c6bb | 1041 | if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) { |
774c3e05 | 1042 | dhcp_packet_process_options(bp); |
3090b7e3 | 1043 | /* Store net params from reply */ |
7044c6bb | 1044 | store_net_params(bp); |
3861aa5c | 1045 | dhcp_state = BOUND; |
92ac8acc | 1046 | printf("DHCP client bound to address %pI4 (%lu ms)\n", |
7044c6bb | 1047 | &net_ip, get_timer(bootp_start)); |
4f28c9b1 | 1048 | net_set_timeout_handler(0, (thand_f *)0); |
573f14fe | 1049 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, |
7044c6bb | 1050 | "bootp_stop"); |
3861aa5c | 1051 | |
e4a3d57d | 1052 | net_auto_load(); |
3861aa5c WD |
1053 | return; |
1054 | } | |
1055 | break; | |
51dfe138 RB |
1056 | case BOUND: |
1057 | /* DHCP client bound to address */ | |
1058 | break; | |
3861aa5c | 1059 | default: |
3090b7e3 | 1060 | puts("DHCP: INVALID STATE\n"); |
3861aa5c WD |
1061 | break; |
1062 | } | |
3861aa5c WD |
1063 | } |
1064 | ||
7044c6bb | 1065 | void dhcp_request(void) |
3861aa5c | 1066 | { |
7044c6bb | 1067 | bootp_request(); |
3861aa5c | 1068 | } |
992742a5 | 1069 | #endif /* CONFIG_CMD_DHCP */ |